Electrochemical behaviour of conducting polymers obtained into clay-catalyst layers. An in situ Raman spectroscopy study

Green Polymerization of 4-(Oxiran-2-ylmethyl)morpholine

“…A possible explanation is probably related to the protonation equilibrium between the monomer and polymer-the latter becoming more important with the chain length; similar results are obtained by Boutaleb et al [24] in the polymerization of l'o-anisidine, aniline by Mag-H + . It was also observed that viscosity increased up to the value of 2.65 ml/g for a concentration of Mag-H + of 20 %, and then it decreased by increasing the quantity of Mag-H + to reach the value 0.45 ml/g with catalyst the concentration 50 % (Fig.…”

Effect of the intercalated cation on the properties of poly(o-methylaniline)/maghnite clay nanocomposites

“…It should be noted that a similar behavior for poly(o-methoxyaniline) synthesized into clay was observed by in-situ Raman spectroscopy, suggesting the existence of a semiquinoid intermediate, which is formed in the first redox process and the oxidation is finished in the second one [21].…”

“…On the contrary, films of PoMea from PoMea/Magh-H are electroinactive in strong acidic electrolyte (Figure 8), where an electrochemical response similar to that observed for poly(o-methoxyaniline) [21] was expected. This can be due to differences in the structure of the polymer.…”

“…Composites of several conducting polymers with montmorillonite were synthesized under different conditions [12][13][14][15][16][17][18][19][20][21][22][23]. Temperini et al monitored the polymerization of aniline, intercalated into sodium-montmorillonite; they found differences between the structure of the polymer in the nanocomposite and bulk PANI [14,18].…”

A correlation of electrochemical and spectroelectrochemical properties of poly(o-toluidine)

“…A possible answer may be the possibility of the presence of segments in the POT polymer with different structural features. Identical behavior with intensity maximum at 0.45 V was observed in the Raman band at 1632 cm −1 for poly(o-anisidine), a derivative of PANI, with 632.8 nm excitation line [46]. This was attributed to the charged quinoniminic intermediates of the phenazine-type segments in the polymer.…”